| abstract |
A condensed ring compound represented by the following formula (1) and an organic electroluminescent device comprising the same: ≪ Formula 1 > Wherein X 1 , X 2 , and R 1 to R 11 Reference is made to the detailed description of the invention. An organic light emitting device having an organic layer including the condensed cyclic compound has characteristics of low driving voltage, high luminous efficiency, and long life. |